Thanks to Joe Wikert and Kat Meyer for continuing to build the Tools of Change platform at O’Reilly , which gives us all a place to talk about innovations in publishing. Thanks to our editor, Brian Sawyer, for helping us pull this book together in short order, to Jennifer Scupi and Teresa Elsey for their amazing proofreading skills, and to Iris Febres for helping us dot all the i’s and cross all the t’s. Thanks to Laurie Petrycki for being an awesome boss. And thanks especially to our ebook development colleagues at O’Reilly—Sanders Kleinfeld, Ron Bilodeau, Andrew Odewahn, Sarah Schneider, and Jessica Hosman—each of whom is working on something new and exciting this very moment.